項目中有這樣一個需求，網頁上上傳了一個視頻，需要獲取此視頻的時長、大小，把這兩個數據返回給前臺在頁面顯示。后臺使用的是springboot框架，項目部署在linux上面。下面是核心代碼：

1、pom文件中需要導入的jar包依賴

(分為兩部分：核心包、ffmpeg包兩部分，ffmpeg包又分為Windows環境以及Linux環境，同時又區分32位系統以及64位系統。針對于不同的運行環境要導入不同的包，這一點對于開發、測試環境為Window而生產環境為Linux的情況，尤其要注意需要導入所有的包，使其在兩種環境下都能夠使用)

<dependency> <groupId>ws.schild</groupId> <artifactId>jave-all-deps</artifactId> <version>2.6.0</version> </dependency> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-core</artifactId> <version>2.4.5</version> </dependency> <!-- window32位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-win32</artifactId> <version>2.4.5</version> </dependency> <!-- window64位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-win64</artifactId> <version>2.4.5</version> </dependency> <!-- linux32位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-linux32</artifactId> <version>2.4.6</version> </dependency> <!-- linux64位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-linux64</artifactId> <version>2.4.6</version> </dependency>

2、controller層代碼

package com.aaa.bbb.controller;import io.swagger.annotations.Api;import lombok.extern.slf4j.Slf4j;import org.apache.commons.io.FileUtils;import org.springframework.util.ResourceUtils;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import ws.schild.jave.MultimediaInfo;import ws.schild.jave.MultimediaObject;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.math.BigDecimal;import java.math.RoundingMode;import java.nio.channels.FileChannel;@Slf4j@RestController@RequestMapping('/readVideo')@Api(tags = '獲取視頻時長、大小相關信息的接口')public class ReadVideoController {/** * 獲取視頻時長 * * @param fileUrl * @return */@PostMapping('/videoLengthAndSize')public static String getLengthAndSize(@RequestParam String fileUrl) throws FileNotFoundException { ReadVideoController r = new ReadVideoController(); String path = ResourceUtils.getURL('classpath:').getPath() + 'static'; System.out.println('666666666666666666666666666666【' + path + '】666666666666666666666666666666】'); fileUrl = path + fileUrl; String videoLength = r.ReadVideoTime(fileUrl);//視頻時長 System.out.println('===========================視頻時長：' + videoLength + '==========================='); return videoLength;}/** * 視頻時長 * * @param FileUrl * @return */public static String ReadVideoTime(String FileUrl) { File source = new File(FileUrl); String length = ''; try { MultimediaObject instance = new MultimediaObject(source); MultimediaInfo result = instance.getInfo(); long ls = result.getDuration() / 1000; Integer hour = (int) (ls / 3600); Integer minute = (int) (ls % 3600) / 60; Integer second = (int) (ls - hour * 3600 - minute * 60); String hr = hour.toString(); String mi = minute.toString(); String se = second.toString(); if (hr.length() < 2) { hr = '0' + hr; } if (mi.length() < 2) { mi = '0' + mi; } if (se.length() < 2) { se = '0' + se; } length = hr + ':' + mi + ':' + se; } catch (Exception e) { e.printStackTrace(); } return length;} /** * 視頻大小 * * @param source * @return */@SuppressWarnings({'resource'})public static String ReadVideoSize(File source) { FileChannel fc = null; String size = ''; try { FileInputStream fis = new FileInputStream(source); fc = fis.getChannel(); BigDecimal fileSize = new BigDecimal(fc.size()); size = fileSize.divide(new BigDecimal(1024 * 1024), 2, RoundingMode.HALF_UP) + 'MB'; } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (null != fc) { try {fc.close(); } catch (IOException e) {e.printStackTrace(); } } } return size;}}

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